I started in modeling over 5 years ago probably closer to 10 years now. However I've always been artistic, and like to draw, paint, etc.
First off always texture your models. Start the models simple, using phototextures. For example a sword, just grab a photo off the net, model it, and then phototexture it. Sounds easy but it's not.
The primary object is to keep the model clean. It's best to learn good modeling techniques first than to relearn after you've self taught yourself the wrong way to do things. Since this is art that has to work with software there is a right, and a wrong way to do things.
As an example...
http://ontarget.altervista.org/002.html
This is one of my earliest works. It's a phototexture, and even though it's fairly low poly it's still not low enough. Also it's made up of multiple pieces, and has hidden polys, and the UVW unwrapping is not spot on.
However I must have done 100 different medieval weapons this way.
Maybe 6 months later of 8 hours a day of modeling I ended up somewhere around...
http://ontarget.altervista.org/021.html
So don't get discouraged. However you have to put forth the time, and effort.